Gas Sensor Based on Lossy Mode Resonances by Means of Thin Graphene Oxide Films Fabricated onto Planar Coverslips

Ignacio Vitoria; Elieser E. Gallego; Sonia Melendi-Espina; Miguel Hernaez; Carlos Ruiz Zamarreño; Ignacio R. Matías

doi:10.3390/s23031459

Sensors (Jan 2023)

Gas Sensor Based on Lossy Mode Resonances by Means of Thin Graphene Oxide Films Fabricated onto Planar Coverslips

Ignacio Vitoria,
Elieser E. Gallego,
Sonia Melendi-Espina,
Miguel Hernaez,
Carlos Ruiz Zamarreño,
Ignacio R. Matías

Affiliations

Ignacio Vitoria: Electrical, Electronic and Communications Engineering Department, Public University of Navarre, 31006 Pamplona, Spain
Elieser E. Gallego: Electrical, Electronic and Communications Engineering Department, Public University of Navarre, 31006 Pamplona, Spain
Sonia Melendi-Espina: School of Engineering, University of East Anglia (UEA), Norwich Research Park, Norwich NR4 7TJ, UK
Miguel Hernaez: School of Engineering, University of East Anglia (UEA), Norwich Research Park, Norwich NR4 7TJ, UK
Carlos Ruiz Zamarreño: Electrical, Electronic and Communications Engineering Department, Public University of Navarre, 31006 Pamplona, Spain
Ignacio R. Matías: Electrical, Electronic and Communications Engineering Department, Public University of Navarre, 31006 Pamplona, Spain

DOI: https://doi.org/10.3390/s23031459
Journal volume & issue: Vol. 23, no. 3
p. 1459

Abstract

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The use of planar waveguides has recently shown great success in the field of optical sensors based on the Lossy Mode Resonance (LMR) phenomenon. The properties of Graphene Oxide (GO) have been widely exploited in various sectors of science and technology, with promising results for gas sensing applications. This work combines both, the LMR-based sensing technology on planar waveguides and the use of a GO thin film as a sensitive coating, to monitor ethanol, water, and acetone. Experimental results on the fabrication and performance of the sensor are presented. The obtained results showed a sensitivity of 3.1, 2.0, and 0.6 pm/ppm for ethanol, water, and acetone respectively, with a linearity factor R2 > 0.95 in all cases.

Published in Sensors

ISSN: 1424-8220 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology
Website: http://www.mdpi.com/journal/sensors

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